'''
Created on 25/03/2009

@author: eh01
'''
from im.ds import dsconstants, dsofactory
from im.ds.dsstub import DSStub
from im.event import eventconstants
from im.event.event import Event
from im.event.eventhandler import BaseEventHandler
from im.event.eventmanager import EventManager
import httplib
import os

class HTTPRequestGETStaticPageHandler(BaseEventHandler):
    '''
    Handles all static HTML GET requests
    '''


    def __init__(self):
        '''
        Constructor
        '''
    
    def do(self, data):
        dso = data
        http_request = dso.get_dst(subject=dsconstants.SUBJECT_ROOT,
                    predicate=dsconstants.PREDICATE_HTTP_REQUEST).get_literal()
        lock = dso.get_dst(subject=dsconstants.SUBJECT_ROOT,
                    predicate=dsconstants.PREDICATE_LOCK).get_literal()                    
        relative_path = None
        event_type = eventconstants.HTTP_RESPONSE_EVENT_TYPE
        # get the path of the appropriate html template
        ds_stub = DSStub()
        if ds_stub.is_hub():
            relative_path = "../../../pages/hub" + http_request.path
        else:
            relative_path = "../../../pages/im" + http_request.path
            
        # get the html
        template_path = os.path.join(os.path.dirname(__file__), relative_path)
        file = open(template_path)
        html_template_string = file.read()
        
        # create new dso        
        new_dso = dsofactory.create_dso_for_im_http_response_handler(httplib.OK, 
                                                               'text/html', 
                                                               html_template_string, 
                                                               http_request, 
                                                               lock)            
        event = Event(event_type, new_dso)
        EventManager().add_event(event)